Prospect theory posits that people do not perceive outcomes as final states of wealth or welfare, but rather as gains or losses in relation to some reference point. People are generally loss averse: the disutility generated by a loss is greater than the utility produced by a commensurate gain. Loss aversion is related to such phenomena as the status quo and omission biases, the endowment effect, and escalation of commitment. The book systematically analyzes the relationships between loss aversion and the law.

Brian Leiter defends a set of radical ideas from Nietzsche: there is no objectively true morality, there is no free will, no one is ever morally responsible, and our conscious thoughts and reasoning play almost no significant role in our actions and how our lives unfold. He presents a new interpretation of main themes of Nietzsche's moral psychology, including his anti-realism about value (including epistemic value), his account of moral judgment and its relationship to the emotions, his conception of the will and agency, his scepticism about free will and moral responsibility, his epiphenomenalism about certain kinds of conscious mental states, and his views about the heritability of psychological traits. In combining exegesis with argument, Leiter engages the views of philosophers like Harry Frankfurt, T. M. Scanlon, and Gary Watson, and psychologists including Daniel Wegner, Benjamin Libet, and Stanley Milgram. Nietzsche emerges not simply as a museum piece from the history of ideas, but as a philosopher and psychologist who exceeds David Hume for insight into human nature and the human mind, repeatedly anticipates later developments in empirical psychology, and continues to offer sophisticated and unsettling challenges to much conventional wisdom in both philosophy and psychology.

'The Oxford Handbook of Behavioral Economics and Law' brings together leading scholars of law, psychology, and economics to provide an up-to-date and comprehensive analysis of this field of research, including its strengths and limitations as well as a forecast of its future development. Its twenty-nine chapters are organized into four parts.

Petrazycki's socio-psychic orientation toward law is behavioral as well as thoughtful. He finds the most suitable methods for obtaining knowledge about legal experiences to be internal and external observation. His technique of introspection is similar to Max Weber's conceptual method. Petrazycki distinguishes between two kinds of interpretive understanding. External observation involves deriving the meaning of an act or symbolic expression from immediate observation without reference to any broader context, and internal observation involves placing the particular act in a broader context of meaning involving facts that cannot be derived from a particular act or expression. --

John Mikhail explores whether moral psychology is usefully modelled on aspects of Universal Grammar.

This book argues that overcoming people's inability to recognize their own wrongdoing is the most important but regrettably neglected area of the behavioral approach to law.

Why do we consider incest wrong, even when it occurs between consenting adults unable to have children? Why are words that gross us out more likely to be deemed "obscene" and denied the protection of the First Amendment? In a world where a gruesome photograph can decisively influence a jury and homosexual behavior is still condemned by some as "unnatural," it is worth asking: is our legal system really governed by the power of reason? Or do we allow a primitive human emotion, disgust, to guide us in our lawmaking? In Objection, psychologists Debra Lieberman and Carlton Patrick examine disgust and its impact on the legal system to show why the things that we find stomach-turning so often become the things that we render unlawful. Shedding light on the evolutionary and psychological origins of disgust, the authors reveal how ancient human intuitions about what is safe to eat or touch, or who would make an advantageous mate, have become co-opted by moral systems designed to condemn behavior and identify groups of people ripe for marginalization. Over time these moral stances have made their way into legal codes, and disgust has thereby served as the impetus for laws against behaviors almost universally held to be "disgusting" (corpse desecration, bestiality) - and as the implicit justification for more controversial prohibitions (homosexuality, use of pornography). Written with a critical eye on current events, Lieberman and Patrick build a case for a more reasoned approach to lawmaking in a system that often confuses "gross" with "wrong."